Results 11 to 20 of about 341,318 (278)
3D Wavelet-Based Optical Flow Estimation [PDF]
Engineering and Technology Journal, 2007 In this paper, a new algorithm for accurate optical flow estimation using discretewavelet approximation is proposed. The image sequences are always assumed tobe noiseless in the computation of optical flow, since there is always a method thatcan perform ...
Mutaz. AbdulWahab
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Robust optical flow estimation [PDF]
Proceedings 1999 International Conference on Information Intelligence and Systems (Cat. No.PR00446), 2003 In this paper a new robust estimator of the optical flow field is shown. Arising from the techniques based on the OFC (optical flow constraint), we develop an estimation that takes several measures around a given pixel and discards the erroneous ones, using a voting schema.
J. Otero, A. Otero, R. Muniz, L. Sanchez
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STC-Flow: Spatio-temporal context-aware optical flow estimation [PDF]
Signal Processing: Image Communication, 2021 In this paper, we propose a spatio-temporal contextual network, STC-Flow, for optical flow estimation. Unlike previous optical flow estimation approaches with local pyramid feature extraction and multi-level correlation, we propose a contextual relation exploration architecture by capturing rich long-range dependencies in spatial and temporal ...
Xiaolin Song, Yuyang Zhao, Jingyu Yang
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A New Fast Method for Optical Flow Estimation Using Discrete Wavelet Transform [PDF]
Engineering and Technology Journal, 2005 In this paper, a new algorithm for accurate optical flow estimation using discrete wavelet approximation is proposed. The image sequences are always assumed to be noiseless in the computation of optical flow, since there is always a method that can ...
M. . AbdulWahab, W . Mahmoud, H. AL-Taai
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Stereo vision-based variational optical flow estimation [PDF]
E3S Web of Conferences, 2020 Optical flow computation is one of the most important tasks in computer vision. The article deals with a modification of the variational method of the optical flow computation, according to its application in stereo vision.
Belyakov P. V. +3 more
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Large Displacement Optical Flow Estimation Based on Robust Interpolation of Sparse Correspondences
IEEE Access, 2020 Recently, the interpolation of correspondences method has been widely used in optical flow estimation, because it produces an accurate flow field and costs little runtimes.
Shidong Shi +5 more
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Motion Vector Field Estimation Using Brightness Constancy Assumption and Epipolar Geometry Constraint [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014 In most Photogrammetry and computer vision tasks, finding the corresponding points among images is required. Among many, the Lucas-Kanade optical flow estimation has been employed for tracking interest points as well as motion vector field estimation ...
S. Hosseinyalamdary, A. Yilmaz
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UAV attitude estimation based on MARG and optical flow sensors using gated recurrent unit
International Journal of Distributed Sensor Networks, 2021 Three-dimensional attitude estimation for unmanned aerial vehicles is usually based on the combination of magnetometer, accelerometer, and gyroscope (MARG).
Xiaoqin Liu +4 more
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Optical Flow Estimation Via Motion Feature Recovery [PDF]
2021 IEEE International Conference on Image Processing (ICIP), 2021 Optical flow estimation with occlusion or large displacement is a problematic challenge due to the lost of corresponding pixels between consecutive frames. In this paper, we discover that the lost information is related to a large quantity of motion features (more than 40%) computed from the popular discriminative cost-volume feature would completely ...
Jiao, Yang +2 more
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BMC Medical Imaging, 2023 Background Ultrasonic echocardiography is commonly used for monitoring myocardial dysfunction. However, it has limitations such as poor quality of echocardiography images and subjective judgment of doctors.
Shanna Liu +10 more
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